diff --git a/web3/engine_api_types.nim b/web3/engine_api_types.nim
index 7c82642..777b687 100644
--- a/web3/engine_api_types.nim
+++ b/web3/engine_api_types.nim
@@ -10,7 +10,7 @@ type
   # https://github.com/ethereum/execution-apis/blob/v1.0.0-alpha.7/src/engine/specification.md#payloadattributesv1
   PayloadAttributesV1* = object
     timestamp*: Quantity
-    random*: FixedBytes[32]
+    prevRandao*: FixedBytes[32]
     suggestedFeeRecipient*: Address
 
   # https://github.com/ethereum/execution-apis/blob/v1.0.0-alpha.7/src/engine/specification.md#payloadstatusv1
diff --git a/web3/ethtypes.nim b/web3/ethtypes.nim
index c8e2cb1..8f1cc34 100644
--- a/web3/ethtypes.nim
+++ b/web3/ethtypes.nim
@@ -210,7 +210,7 @@ type
     stateRoot*: BlockHash
     receiptsRoot*: BlockHash
     logsBloom*: FixedBytes[256]
-    random*: FixedBytes[32]
+    prevRandao*: FixedBytes[32]
     blockNumber*: Quantity
     gasLimit*: Quantity
     gasUsed*: Quantity